CN105102914B - For recycled material exsiccator and the method for humidity mud are dried - Google Patents
For recycled material exsiccator and the method for humidity mud are dried Download PDFInfo
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- CN105102914B CN105102914B CN201480010110.4A CN201480010110A CN105102914B CN 105102914 B CN105102914 B CN 105102914B CN 201480010110 A CN201480010110 A CN 201480010110A CN 105102914 B CN105102914 B CN 105102914B
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- exsiccator
- material system
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- separator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/084—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
- F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
- F26B17/102—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with material recirculation, classifying or disintegrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/02—Biomass, e.g. waste vegetative matter, straw
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to for the recycled material exsiccator that humidity mud is dried.According to the present invention, recycled material exsiccator includes two adjacent recycled material systems of mutual heat-exchange communication, wherein first circulation material system is drying sludge side, and second circulation material system is cold side, and the first and second recycled material systems each include at least one elongated riser (3,16), and the riser (3) of first circulation material system and the riser (16) of second circulation material system adjacent in the way of betwixt forming shared heat exchange surface.Moreover, it relates to corresponding method.
Description
Invention field
The present invention relates to for the recycled material exsiccator that humidity mud is dried, and for the side of humidity mud is dried
Method.
Background of invention
By the different types of exsiccator for variety classes method known in the art.Additionally, it is known that being based on fluid bed
Different types of exsiccator with recycled material technology.According to the present invention, immediate prior art is with fluid bed and recycle
Matter exsiccator is representative, and it is restorably used hot water or vapor as thermal source.
In the bottom of fluidized bed dryer, the vertical speed of fluidised material is zero, and the volume fraction of solid material is led to
In the range of Chang Cong 0.2 to 0.5.In space more than fluid bed, the volume fraction of solid material is usual<0.001, here
In the case of, the fluidised material stream discharged from exsiccator is little.In recycled material exsiccator, the body of solid material in fluid bed
Fraction generally in the range of from 0.1 to 0.3, and in region more than fluid bed, such as in riser, from
In the range of 0.005 to 0.05.Due to the high solid material content in riser, for recycled material exsiccator provide separator and
Backward channel, so that the solid material discharged from riser can be back to fluid bed.
In the fluidized bed dryer based on recoverable heat supply, must be mounted on the fluid bed of thickness for hot surface,
And it is thus subject to the heavy wear being caused by fluidised material.In order to avoid blocking it is necessary to loosely assemble (pack) to supply hot surface.
In order to the heat supply of requirement is surface mounted to fluid bed, its volume becomes big.For these reasons, bubbling fluidized bed is dried
The internal consumption of device is high.In addition, the confession hot surface being attached to fluid bed weakens the mixing of solid material in fluid bed, and
Particularly when mud is dried, the pollution for hot surface and the risk of blocking are high.The problem of bubbling fluidization bed dryer
Also include the risk caught fire and explode, this is because the volume fraction of the solid material more than fluid bed is little so that doing
Dry dust forms explosive mixture in the presence of oxygen.Due to heavy wear, the heat exchanger being attached to fluid bed needs in a large number
Maintenance, which limit the availability of exsiccator.
In order to make up the defect of bubbling fluidization bed dryer above-mentioned, have been developed in which peace on fluid bed
Dress is for the recycled material exsiccator of hot surface.Based on the first circulation material exsiccator of heat supply can be recovered in Finnish patent FI
It is disclosed in 105853.Invention is characterised by being arranged on the riser of the recycled material exsiccator above fluid bed, and it is dry
The bottom of dry device has cylindrical shape, and it is formed by the pipe of the vertical pipe in pipe with cylindrical shape, and puts
The heat of hot water or steam is transported to the cover side of this heat exchanger.In the invention of patent FI105853, with positioned at heat exchange
The pipe of the centre of device forms the mode of the backward channel of recycled material, the rotation of rotational symmetric many openings of recycled material exsiccator
Wind separator is coaxially mounted on above heat exchanger.The exsiccator of patent FI105853 and the base being formed on its basis afterwards
Compensate for the defect of fluidized bed dryer above-mentioned in the recycled material exsiccator that can recover heat supply, but do not make up can not
It is related to the problem of the recovered use of water or steam with avoiding, the most significant problem is expensive pressurized hot water or vapour system,
The expensive structure of pressurization and high internal consumption.If in order to produce hot water or steam it is necessary to build individually for exsiccator
Boiler unit, then substantially increase the price of exsiccator further.
Goal of the invention
The purpose of the present invention is the drying proposal of the open novelty being used for dry humidity mud.In addition, the purpose of the present invention
It is open novel recycled material exsiccator.
Summary of the invention
The present invention is based on the recycled material exsiccator for humidity mud is dried.According to the present invention, recycled material exsiccator
Including two adjacent recycled material systems of heat-exchange communication each other, preferably pass through the heat exchange table of impermeable material
Face, such as restorably by the heat exchange surface of impermeable material, and wherein first circulation material system is done for mud
Dry side and second circulation material system are cold side, and the first and second recycled material systems each include at least one carefully
Long riser, and the riser of the riser of first circulation material system and second circulation material system is betwixt to form
The mode of the heat exchange surface of shared impermeable material is adjacent.
In addition, the present invention is based on the method for humidity mud is dried.According to the present invention, done using recycled material exsiccator
Dry humidity mud, this recycled material exsiccator includes two adjacent recycled material systems of heat-exchange communication each other, and its
Middle first circulation material system is drying sludge side and second circulation material system is cold side, and wherein first and second
Recycled material system each includes at least one elongated riser, and the riser of first circulation material system and second follows
The riser of ring material system is adjacent in the way of betwixt forming shared heat exchange surface, and moist mud is supplied to
First circulation material system and exothermic material are supplied to second circulation material system.
In this, the recycled material system of exsiccator side is referred to as first circulation material system, and cold side
Recycled material system is referred to as second circulation material system.
In this, riser can be the tubular conduit of any species and shape, pipe etc., wherein in exsiccator
Material compositions can be delivered up within the enclosed space.
In this, mud represents any pureed raw material being formed by liquid and solid material.
Recycled material exsiccator according to the present invention is by two recycle preferably passing through heat exchange surface heat-exchange communication
Matter system is formed, and wherein first circulation material system is dried process, and the heat of the heat energy of exothermic material, such as gas
Can, from second circulation material system, the first circulation material system of the process of being dried is transferred to by heat exchange surface.
In one embodiment, first circulation material system includes first class material feeding apparatus, for example, fluidize material
Material supply connector, it is used for the fluidising chamber supplying fluidised material to first circulation material system；Moist mud feedway,
Such as mud supply connector, it is used for supplying mud to fluidising chamber；Gas supply device, such as supply pipe；Gas distributes
Grate (grate) and/or distributing nozzle, it is used for providing gas tangentially to fluidising chamber；At least one the first elongated riser, its
Preferably provided with vertical direction, in this riser, moist mud is fluidized, that is, be dried simultaneously together with fluidised material and
Gas is conveyed upwards in fluidizing space together；First group of backward channel, it is used for by solids fluidized material and to be dried dirty
The mixture that mud is formed is back to fluidising chamber；With sludge discharge device is dried, at least one pipe connections, using this device, will
The mud that is dried that fluidised material may also be included is discharged from exsiccator.
In a method according to the present present invention, by first class material feeding apparatus, fluidised material is supplied to first
The fluidising chamber of recycled material system, is supplied moist mud by moist mud feedway, and is supplied by gas supply device
To gas, while drying at least first elongated riser, by moist mud together with fluidised material and gas
Fluidize upwards together, by first group of backward channel by by solids fluidized material with mixture that mud formed is dried is back to stream
Change room, and by sludge discharge device is dried, the mud that is dried that may also include fluidised material is discharged from exsiccator.
In one embodiment, second circulation material system includes the second fluidisation material feeding apparatus, at least one confession
To connector, it is used for the fluidising chamber supplying fluidised material to second circulation material system；Exothermic material feedway, for example
One group of supply pipe, gas distribution grate and/or distributing nozzle, it is used for supplying exothermic material to second circulation material system
Fluidising chamber；At least one the second elongated riser, is preferably provided with vertical direction, in this riser, by exothermic material
Fluidize upwards together with fluidised material；Second group of backward channel, it is used for for fluidised material being back to fluidising chamber；With fluidisation material
Material outlet device, at least one pipe connections, it is used for discharging fluidised material from exsiccator.
In a method according to the present present invention, by the second fluidisation material feeding apparatus, fluidised material is supplied to second
The fluidising chamber of recycled material system, and supply exothermic material by exothermic material feedway, at least one elongated the
In two risers, exothermic material is fluidized upwards together with fluidised material, by second group of backward channel, fluidised material is returned
To fluidising chamber, and discharge fluidised material from exsiccator as desired by fluidised material outlet device.
In one embodiment, hot gas is used as exothermic material.In one embodiment, the temperature of gas from
In the range of 500 to 900 DEG C, in a preferred embodiment from 500 to 700 DEG C.In one embodiment, by heat exchange
Device provides gas tangentially to exsiccator, for adjusting the temperature to suitable level.
In one embodiment, the thermal source of recycled material exsiccator is gas, and this gas may include different types of
Grain, for example, dirt particles or condensing vapour, even up to significant degree.In one embodiment, flue gas is used as gas
Body.
It is used hot gas to there are many significantly advantages as exothermic material in recycled material exsiccator.Play heat exchange
The mean temperature of the equipment of device effect, and if thus also the density of hot-fluid is water with respect to exothermic material or vapor can
The mean temperature of energy and heat flow density can be many times.Because the heat exchange number of exsiccator side with the heat exchange number of gas side is
Same order, so using can only use for hot surface required for heat exchange in the recycled material exsiccator of hot gas
The 20-30% of the confession hot surface as the equivalent exsiccator of thermal source for the water.Because the air-flow of recycled material exsiccator and thus its
Internal consumption is directly proportional with circulating current, so the internal consumption in the recycled material exsiccator using gas is generally only
It is the 20-30% of internal consumption water or steam being used as the equivalent exsiccator of thermal source.Exsiccator according to the present invention can quilt
It is embodied as non-super laminated structure, so that ratio is used water or steam to have lower manufacturing cost as the equivalent exsiccator of thermal source.Separately
Outward, because can be implemented as non-super laminated structure according to the exsiccator of the present invention, its cross-sectional surface can be rectangle, this
Manufacturing technology aspect is advantageous.Exsiccator be not required to be classified for pressure vessel, so it using not being subject to regard to pressure
The rule restriction of container.In addition, being this required pressurization guard system or equipment is not required to exsiccator, this is even further
Reduce the totle drilling cost of the exsiccator equipment according to the present invention.In many cases it is also possible to avoid the convection current of the costliness of boiler
Part, because it is replaced by the heat exchanger of recycled material exsiccator.Comprise the energy prices of the gas of dirt particles and steam
Substantially lower than the energy prices of hot water or steam.
Although have the advantages that above-mentioned enumerate, be used gas as exsiccator thermal source in the past also cannot, because
For the overheated of structure or with regard to using hot gas catch fire or risk of explosion never solves as a practical manner.In addition, with
Front never have in order to can be using the organization plan of the practicality of the gas comprising a large amount of granules and/or condensing vapour.
The potential problems being directed to use with gas as thermal source are solved in the recycled material exsiccator according to the present invention
Certainly, it passes through heat release stream side in recycled material exsiccator, circulates powdery fluidised material, fluidisation in second circulation material system
Material most suitably has the granular size of 0.1-0.5mm, such as sand.This arrangement provides many advantages.Existed according to the present invention
The maximum temperature running the temperature of the bottom of second circulation material system as heat exchanger in recycled material exsiccator is permissible
The temperature accurately being limited the gas to desired value, no matter supplied by the recycle mass flow of second circulation material system is such as
What, the bottom that it is the recycled material system of cold side in exsiccator by the recycle mass flow forcing second circulation material system
The setting value at place.In the exsiccator according to invention, the controlled circulation material stream holding cold side of second circulation material system is
The heat supply surface cleaning of gas side, can densely to assemble for hot surface and heat exchange keeps good.With single gas
Body phase ratio, the recycle mass flow of second circulation material system improves the heat transfer coefficient of heat exchange.
In one embodiment, first circulation material system includes the first separator part, dirty by being dried for separating
The mixture that mud and fluidised material are formed, this is dried mud and fluidised material and carrys out in comfortable drying the gas of evaporation and gasification and become
The remaining suspension thing (suspension) dividing, the water of such as evaporation, gaseous compound etc..In one embodiment, first point
Include separator from device part, it include the separator inlet passage of perpendicular, deflector, substantially horizontal point
Conical section from device room, substantially horizontal central canal and separator.In a method according to the present present invention, exothermic material
Separated from fluidised material using the second separator part in second circulation material system.In a method according to the present present invention
In, the first separator part in first circulation material system is passed through from surplus by mixture mud being dried and fluidised material is formed
Separate in remaining suspension.
In one embodiment, first circulation material system includes single discharger, and it is used for discharge and is being dried
In the composition that removes from mud, be such as derived from the composition of the evaporation and gasification of first circulation material system.In an embodiment party
In formula, provide these dischargers before separator part.Discharger may include for example discharges pipe connections and one group of row
Outlet pipe.
In one embodiment, second circulation material system includes the second separator part, and it is used for exothermic material
It is separated from each other with fluidised material.In one embodiment, the second separator part includes separator, and it is included substantially
Vertical separator inlet passage, deflector, substantially horizontal separator room and substantially horizontal central canal and separator
Conical section.In a method according to the present present invention, exothermic material passes through the second separation in second circulation material system
Device part separates from fluidised material.
In one embodiment, second circulation material system is included by fluidising chamber, the second separator part and second group
The assembly that backward channel is formed, it includes the adjustment equipment being arranged in backward channel, for adjusting the fluidisation material of backward channel
Stream.In a method according to the present present invention, fluidised material stream is in the backward channel of second circulation material system using peace
Be contained in adjustment equipment in backward channel to adjust, this second circulation material system include by fluidising chamber, the second separator part and
The assembly that second group of backward channel is formed.
Had many excellent according to the separator that can be used in both the first and second recycled material systems of the present invention
Point.In the separator inlet passage of vertically-oriented downward, acceleration of gravity improves the speed of solid material to be separated, its
Can be than the speed of the gas being calculated according to the free cross-sectional surface of access road greatly from 2m/s to 5m/s.According to the present invention
Separator provide effective pre-separation, by it, even for the float with high solid material content, single-stage is divided
There is provided from device and efficiently separate.In recycled material exsiccator, this true importance is more promoted, because recycled material
The volume fraction of the solid material in exsiccator most suitably must be significantly larger than example from 1 to 10% in riser
As being designed for the volume fraction of the solid material in the recycled material reactor burning, in the riser of recycled material reactor
In, the volume fraction of solid material is most suitably<1%.In a word, following advantages of separator system can be proposed.By effectively
Pre-separation, even for dense float, single-stage separator provides efficiently separating of solid material.Rely on and effectively divide in advance
From in the structure of separator, the degree of wear is little.Separator does not include so-called network structure, and the accumulation of this structure can be overheated
And even cause the drying material catching fire or exploding.Separators according to the present invention device provides compact He cheap structure.
In one embodiment, in the fluidising chamber (25) of second circulation material system, play exothermic material effect
The Vertical Free superficial velocity of gas is arranged in from 0.5m/s to 3m/s, more preferably from 1m/s to 2m/s in the range of.
In one embodiment, in access road, supply hanging down of the gas to the first and/or second separator part
Straight free surface velocity is arranged in from 5m/s to 20m/s, more preferably from 7m/s to 15m/s in the range of.
Fluidised material used in the first and second recycled material systems can be identical fluidised material.Alternatively,
Can be using different fluidised materials in the first and second recycled material systems.The fluidised material using can be known per se
And in order that the applicable any fluidised material of purpose, for example, sand, granular Calx or other bulk material, wherein flow
The granular size changing material is in the range of from 0.1mm to 1mm.
In one embodiment, arrangement the first and second recycled material systems to be to form tubing heat exchanger, and wherein the
One recycled material system is arranged on the tube side of heat exchanger, and second circulation material system is arranged on the cover of heat exchanger
Side.In an optional embodiment, arrangement the first and second recycled material systems to form tubing heat exchanger, wherein the
One recycled material system is arranged on the cover side of heat exchanger, and second circulation material system is arranged on the pipe of heat exchanger
Side.
Preferably, Continuous Running Equipment is used as according to the recycled material exsiccator of the present invention.
In addition, invention further relates to recycled material exsiccator, it includes recycled material system for mud is dried and at it
The cold side of middle circulation exothermic material, and heat exchange surface therebetween, it is used for from cold side heat of transfer so that mud is dried.According to
The present invention, the exothermic material of use is hot gas.Preferably, the temperature of hot gas such as flue gas can from 300 DEG C to
In the range of 1000 DEG C.Recycled material system for mud is dried can be similar to first circulation material system disclosed herein
System.In one embodiment, cold side is disposed around recycled material system, preferably on so-called cover side.At one
In embodiment, cold side can be arranged on the inside of recycled material system, for example, is flowed wherein by hot gas
Pipe.In one embodiment, cold side can be arranged in tube side, and recycled material system is arranged on cover side.
Recycled material exsiccator according to the present invention and method can be used for different types of mud is dried.In an embodiment party
The mud of wastewater purification plants in formula, is dried.
Using the recycled material exsiccator according to the present invention and method, effectively different types of mud can be dried, and
And humidity mud can be changed into useful product, for example, for combustion reactor.
List of drawings
Fig. 1 illustrates the sectional view from unilateral observation for the recycled material exsiccator according to the present invention,
Fig. 2 illustrates the sectional view that the recycled material exsiccator according to Fig. 1 is observed from the second side perpendicular to the first side, and
Fig. 3 illustrates the horizontal sectional view of the recycled material exsiccator according to Fig. 1.
Detailed Description Of The Invention
With reference to the accompanying drawings the present invention is described by detailed embodiment example below.
Embodiment 1
Fig. 1,2 and 3 illustrate an embodiment of the exsiccator based on two recycled material systems according to the present invention.
Fig. 1 and Fig. 2 illustrates the side cross-sectional view of the exsiccator according to invention, and Fig. 3 illustrates the exsiccator of horizontal cross-section.It is dried
Process is carried out in first circulation material system, and first circulation material system includes fluidisation gas inlet connector (31) and has
Gas distribution grate (1) of distributing nozzle, it is used for the fluidising chamber (2) of fluidization gas distribution to first circulation material system,
Individually fluidised material supplies the supply connector (13) of connector (12) and sludge material to be dried and mud is dried goes out
Mouth connector (14) is connected to fluidising chamber.Existed by the float that fluidizing gas, sludge material to be dried and fluidised material are formed
The upper chambers (4) of overlying are risen to from fluidising chamber (2), the first riser is vertically arranged elongated tubular in first riser (3)
Shape riser.
Upper chambers (4) are connected to the first separator and are partially separated cyclone separator, for will be by from remaining suspension
The mixture that mud formed with fluidised material that is dried of thing is separated with gas.First separates cyclone separator includes perpendicular
Separator inlet passage (5), deflector (6), substantially horizontal separator room (7), substantially horizontal central canal (8) and
The conical section (9) of separator.The separator inlet passage (5) of rectangle on the vertical, section of separator cyclone separator
Access end is installed in upper chambers (4).The longer side of the horizontal cross-section of separator inlet passage (5) is most suitably comparatively short
More than the long twice of length of side.In order to strengthen the vortex being formed in substantially horizontal separator room (7), in access road
(5) mounting guiding board (6) at outlet ends.The advantage of this separator is most of solid material even in separator room
(7) lean on Gravity Separation before, only dust-like solid material passes through from it, utilizes it, separates the pressure loss of cyclone separator
It is minimized with abrasion.Described dust is affected poly- on the wall of separator room (7) by the vortex being formed in separator (7) room
Collection, and the dust stream assembled is directed to the conical section (9) of separator together with remaining solid material by gravity.Only comprise
The gas of a small amount of fine solid material is discharged by the central canal (8) of level.The solid material being directed to conical section (9) leans on
Gravity is directed to the upper end of one group of backward channel (10,11) being arranged on cone bottom end.By solids fluidized material
The mixture expecting and being dried mud formation is back to first by the lower attachment (11) of backward channel (10) and backward channel
The fluidising chamber (2) of recycled material system.The lower attachment (11) installing backward channel is so that backward channel (10) connects to stream
Change room (2).
Above for exsiccator side recycled material system be first circulation material system operation described usual
It is also applied for exothermal gas recycled material system, i.e. second circulation material system.Second circulation material system includes exothermal gas
Feedway (15).Gas supply device (15) includes the gas delivery connector and device for distributing gas, such as gas
Distribution grate and distributing nozzle, are allocated by its exothermal gas to the fluidising chamber (25) of second circulation material system.Fluidising chamber
(25) level cross-sectionn surface is such size：The Vertical Free table of the gas as calculated according to free cross-sectional surface
Face velocity is most suitably in the range of from 0.5m/s to 2m/s.Most suitably, the device for distributing gas is had by bottom
The pipe spraying aperture is had to be formed.In addition, fluidised material supply connector (26) and outlet connector (27) are connected to fluidising chamber
(25).
The float being formed by exothermal gas and fluidised material is in the second elongated riser (16) from second circulation thing
The fluidising chamber (25) of matter system rises to the top section of exsiccator, in this connector, covers around the first riser (3).?
Top office construction opening (17) of exsiccator, for shifting the float that formed by exothermal gas and fluidised material to second
Separator is partially separated device cyclone separator, for being separated from each other exothermal gas and fluidised material.Second separator whirlwind
Separator includes the separator inlet passage (18) of perpendicular, deflector (19), substantially horizontal separator room
(191), the conical section (21) of substantially horizontal central canal (20) and separator.The level of separator inlet passage (18) is cut
Face is rectangle.(16) are covered on the free cross-section surface of the second riser is such size：As the gas being calculated according to it
Vertical Free superficial velocity preferably when gas reach separator part when, most suitably in the scope from 5m/s to 15m/s
Interior.The longer side of the level cross-sectionn of separator inlet passage (18) most suitably compares more than the long twice of length of short side.For
Strengthen the vortex being formed in substantially horizontal separator room (191), install at the bottom end of access road (18)
Deflector (19).The free cross-sectional surface of access road (18) is such size：The speed of the gas being calculated according to it
Most suitably in the range of from 5m/s to 15m/s.Solids fluidized material more than 99% is thus even in separator room (191)
Lean on Gravity Separation, the solids fluidized material of only fraction passes through from it before.Described fine fluidised material is subject to separator room (191)
The impact of the vortex of middle formation is gathered on the wall of separator room (191), and guides by gravity to the conical section of separator
(21).Gas passes through central canal (20) and discharges.The fluidised material being directed to the conical section (21) of separator is drawn by gravity
It is directed at the top end being arranged on the one group of backward channel (22,23,24) at the bottom of cone.It is logical that fluidised material passes through return
Road (22) is mobile to be moved from it to the recycled material adjustment equipment (23) being arranged at its bottom and by fluidised material opening (24)
Move to the fluidising chamber of second circulation material system (25).
Control and adjust the fluidisation material of the backward channel (22) through second circulation material system using adjustment equipment (23)
Stream be fluid bed temperature set point, this depend on fluidising chamber (25) in material to be dried, most suitably from 150 to
In the range of 450 DEG C.While ciculation fluidized material stream keeps the temperature of fluid bed in desired set point, it also keeps dry
The cover side cleaning of dry device.Fluidised material stream adjustment equipment (23), such as actuator, most suitably for pneumatic.Fluidised material with
Non- packaging gravity movement is leaned on to fluidising chamber (25) from adjustment equipment (23) by opening (24).
Although exothermal gas recycled material system is arranged on also operates to the dry of heat exchanger in examples described above
On the cover side of dry device, but the pipe of exsiccator can also be installed in exothermal gas recycled material system according to the scheme of invention
Mode on side is carried out.
In the embodiment preferably according to the exsiccator of the present invention in terms of flowing, heat and architectural feature, the stream of use
The separator changing material is horizontal separator (5,6,7,8,9) and (18,19,191,20,21), and wherein horizontal separator is the most suitable
The access road (5) of cross section rectangle closing and (18) are downwardly oriented by perpendicular, detached for discharging from separator
Fluidised material, and the bottom of substantially horizontal separator room is connected to the top section of backward channel by cone,
And the horizontal cross-sectional shapes of recycled material exsiccator are most suitably rectangle.
Recycled material exsiccator according to the present invention and method are applied to different embodiments, the most different for carrying out
Exsiccator scheme and for regard to be dried least congener mud.
The present invention is not limited only to examples described above；But, the model of the inventive concept being limited in claim
In enclosing, many modifications are possible.
Claims (21)
1. be used for be dried humidity mud recycled material exsiccator it is characterised in that：Described recycled material exsiccator includes mutually
Two adjacent recycled material systems of heat-exchange communication, wherein first circulation material system is drying sludge side, and second
Recycled material system be cold side, and described first circulation material system and described second circulation material system each include to
An elongated riser (3,16), and the described riser (3) of described first circulation material system and described second less is followed
The described riser (16) of ring material system is adjacent in the way of betwixt forming shared heat exchange surface.
2. exsiccator according to claim 1 it is characterised in that：Described first circulation material system includes first class material
Material feedway (12), it is used for the fluidising chamber (2) supplying fluidised material to described first circulation material system；Moist mud
Feedway (13), it is used for supplying mud to described fluidising chamber (2)；Gas supply device (1,31), it is used for gas
Supply to described fluidising chamber (2)；At least one elongated the first riser (3), in described riser, moist mud is being done
It is delivered up together with described fluidised material and gas while dry；First group of backward channel (10,11), it is used for will be by
Solids fluidized material is back to described fluidising chamber (2) with the mixture that mud formation is dried；With sludge discharge device (14) is dried,
It is used for discharging the described mud that is dried from described exsiccator.
3. exsiccator according to claim 1 and 2 it is characterised in that：Described first circulation material system includes first point
From device part (5,6,7,8,9), it is used for be separated with remaining suspension thing by the mixture that mud formed with fluidised material is dried.
4. exsiccator according to claim 3 it is characterised in that：Described first separator part (5,6,7,8,9) includes
Separator, described separator includes the separator inlet passage (5) of perpendicular, deflector (6), substantially water
The conical section (9) of flat separator room (7), substantially horizontal central canal (8) and described separator.
5. exsiccator according to claim 1 and 2 it is characterised in that：Described second circulation material system includes second
Change material feeding apparatus (26), it is used for the fluidising chamber (25) supplying fluidised material to described second circulation material system；Put
Hot material feedway (15), it is used for supplying exothermic material to described fluidising chamber (25)；At least one elongated second carries
Riser (16), in described riser, exothermic material is fluidized upwards together with described fluidised material；Second group of backward channel
(22,23,24), it is used for for described fluidised material being back to described fluidising chamber (25)；With fluidised material outlet device (27), its
For discharging described fluidised material from described exsiccator.
6. exsiccator according to claim 5 it is characterised in that：Described second circulation material system includes the second separator
Partly (18,19,191,20,21), it is used for being separated from each other described exothermic material and fluidised material.
7. exsiccator according to claim 6 it is characterised in that：Described second separator part (18,19,191,20,
21) include separator, described separator includes the separator inlet passage (18) of perpendicular, deflector
(19), the conical section of substantially horizontal separator room (191) and substantially horizontal central canal (20) and described separator
(21).
8. exsiccator according to claim 6 it is characterised in that：Described second circulation material system is included by described fluidisation
Room (25), described second separator part (18,19,191,20,21) and described second group of backward channel (22,23,24) are formed
Assembly, and described second circulation material system includes the adjustment equipment (23) that is arranged in described backward channel (22), its
For adjusting the fluidised material stream in described backward channel.
9. exsiccator according to claim 5 it is characterised in that：Hot gas is used as described exothermic material.
10. exsiccator according to claim 9 it is characterised in that：Described hot gas is flue gas.
11. exsiccators according to claim 1 and 2 it is characterised in that：Described first circulation material system and described second
Recycled material system forms tubular heat exchange, and wherein said first circulation material system is arranged on the pipe of described heat exchanger
Side, and described second circulation material system is arranged on the cover side of described heat exchanger.
12. be used for be dried humidity mud methods it is characterised in that：Humidity mud is dried using recycled material exsiccator, described
Recycled material exsiccator includes two adjacent recycled material systems of mutual heat-exchange communication, and wherein first circulation material
System be drying sludge side, and second circulation material system be cold side, and wherein said first circulation material system and
Described second circulation material system each includes at least one elongated riser (3,16), and described first circulation material system
The described riser (16) of the described riser (3) of system and described second circulation material system is betwixt to form shared heat friendship
The mode changing surface is adjacent, and moist mud is supplied to described first circulation material system and supplies exothermic material to described
Second circulation material system.
13. methods according to claim 12 it is characterised in that：By first class material feeding apparatus (12) supply stream
Change material, moist mud supplied by moist mud feedway (13) and passes through gas supply device (1,31) supply gas
To the fluidising chamber (2) of described first circulation material system, while drying at least elongated first riser (3)
Moist mud is delivered up together with described fluidised material and gas, will be by solid by first group of backward channel (10,11)
Body fluidised material is back to described fluidising chamber (2) with the mixture that mud formation is dried, and by sludge discharge device is dried
(14) discharge from described exsiccator and mud is dried.
14. methods according to claim 12 or 13 it is characterised in that：Using in described first circulation material system first
Separator part (5,6,7,8,9) will be separated with remaining suspension thing by the mixture that mud formed with fluidised material is dried.
15. methods according to claim 12 or 13 it is characterised in that：Supplied by the second fluidisation material feeding apparatus (26)
Supply exothermic material to fluidised material with by exothermic material feedway (15) to the fluidisation of described second circulation material system
Room (25), at least elongated second riser (16) by exothermic material together with described fluidised material to upstream
Change, described fluidised material is back to by described fluidising chamber (25) by second group of backward channel (22,23,24), and according to need
Fluidised material is discharged from described exsiccator by fluidised material outlet device (27).
16. methods according to claim 15 it is characterised in that：Separate by described second circulation material system second
Described exothermic material is separated by device part (18,19,191,20,21) with fluidised material.
17. methods according to claim 12 or 13 it is characterised in that：Lead in the return of described second circulation material system
In road (22), adjust fluidised material stream using the adjustment equipment (23) being arranged in described backward channel (22), described second follows
Ring material system is included by fluidising chamber (25), the second separator part (18,19,191,20,21) and second group of backward channel
The assembly that (22,23,24) are formed.
18. methods according to claim 12 or 13 it is characterised in that：Hot gas is used as exothermic material.
19. methods according to claim 18 it is characterised in that：The described hot gas using is flue gas.
20. methods according to claim 15 it is characterised in that：Described fluidising chamber in described second circulation material system
(25), in, the Vertical Free superficial velocity playing the gas of described exothermic material effect is arranged in the model from 0.5m/s to 2m/s
In enclosing.
21. methods according to claim 12 or 13 it is characterised in that：Reach described first separator part (5,6,7,
8th, 9) and/or the Vertical Free superficial velocity of gas of described second separator part (18,19,191,20,21) is arranged to
In the range of 5m/s-15m/s.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20135160 | 2013-02-22 | ||
| FI20135160A FI125978B (en) | 2013-02-22 | 2013-02-22 | Rotary mass dryer and method for drying wet sludge |
| PCT/FI2014/050133 WO2014128356A1 (en) | 2013-02-22 | 2014-02-21 | Circulating mass dryer and method for drying wet sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105102914A CN105102914A (en) | 2015-11-25 |
| CN105102914B true CN105102914B (en) | 2017-03-08 |
Family
ID=51390552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480010110.4A Active CN105102914B (en) | 2013-02-22 | 2014-02-21 | For recycled material exsiccator and the method for humidity mud are dried |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US9752828B2 (en) |
| EP (1) | EP2959245B1 (en) |
| CN (1) | CN105102914B (en) |
| CA (1) | CA2936267C (en) |
| ES (1) | ES2659005T3 (en) |
| FI (1) | FI125978B (en) |
| HU (1) | HUE035629T2 (en) |
| PL (1) | PL2959245T3 (en) |
| SG (1) | SG11201610679SA (en) |
| WO (1) | WO2014128356A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI125978B (en) * | 2013-02-22 | 2016-05-13 | Endev Oy | Rotary mass dryer and method for drying wet sludge |
| CN106517726A (en) * | 2016-12-26 | 2017-03-22 | 南昌航空大学 | Two-stage sludge drying device and method |
| CN112390504A (en) * | 2020-12-06 | 2021-02-23 | 哈尔滨华崴重工有限公司 | Fluidized bed reactor and system and method for drying and incinerating sludge by using same |
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Also Published As
| Publication number | Publication date |
|---|---|
| ES2659005T3 (en) | 2018-03-13 |
| PL2959245T3 (en) | 2018-05-30 |
| FI20135160A (en) | 2014-08-23 |
| CA2936267C (en) | 2021-09-28 |
| HUE035629T2 (en) | 2018-05-28 |
| EP2959245A4 (en) | 2016-11-30 |
| EP2959245A1 (en) | 2015-12-30 |
| CA2936267A1 (en) | 2014-08-28 |
| SG11201610679SA (en) | 2017-01-27 |
| US9752828B2 (en) | 2017-09-05 |
| US20160003540A1 (en) | 2016-01-07 |
| CN105102914A (en) | 2015-11-25 |
| WO2014128356A1 (en) | 2014-08-28 |
| FI125978B (en) | 2016-05-13 |
| EP2959245B1 (en) | 2017-11-08 |
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